<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        div{
            display: flex;
            width:100%;
            height: 150px;
            background-color: red;
            justify-content: space-between;
            align-items: center;
        }
        div>span{
            background-color: green;
            width: 100px;
            height: 25px;
            
        }
    </style>
</head>
<body>
    <div>
        <span>1</span>
        <span>2</span>
        <span>3</span>
    </div>
</body>
</html>